Carbureter.



N. C. STAMPS.

GARBURETER.

APPLICATION FILED DEG. 5, 1910.

ggg gg, Patented Mar.3,1914.

witnesses. W ifiaezzmw J. 103959891? 'A iicatien aieanecembersyieio.Serial In. 595,730.

UNITED STATES PATENT OFFICE NA'ItE-I IANiEfl-"GI swarms, or bonsa -rank,CALIFORNIA; AssIeivoit 1T0 STROMBERG- Moron nEvIcns German or CHICAGO,"ILLINOIS, A CORPORATION or ILLINOIS:

To all whom it may concern Be it known that I, NATHANIEL (I. STAMPS, acitizen of the United States, residing at Ocean Park, county of LosAngeles, and State of California, have invented new and usefulImprovements in Carburetors, of which the following is a specification.

This invention relates to improvements in carburetors and particularlyto such as are adapted for use in connection with auto-m0- biles and itis an object of tie invention to p ovide a carbureter in which the flowof gasolene for producing the mixture of air and gas for the automobileengine may be controlled in accordance with the requirement of theengine, automatically' It is also an object of the invention to providea carbureter with a plurality of gasolene inlets, one of which iscontrolled by the suction or pull of the engine in drawing in thegaseous mixture for its operation.

The invention has been illustrated so as to 1 show the preferred form ofapparatus and the embodiment of its features are shown herein.

The invention consists in'the novel construction, combinations andarrangements of .,Fig. .2 is also a side elevation of the carbureter,but looking at the same from the a i taken on the line carbureter, thesleeve or thimble which conside upon which the gasolene is introduced.Fig. 3 is a vertical central sectional view 3-3 of Fig. 1 through thetrols the gasolene feed being shown in side is a detail elevation. Fig.4 is a central vertical sectional view through the mechanism taken atright angles to the plan of the section of Fig. 3. Fig. 5 is ahorizontal sectional view taken upon the line a-b of Fig. 2. Fig. 6horizontal sectional view taken upon the line c-al of Fig. 4. Fig. 7 isa de tail sectional view through the adjustable means for controllingthe action of the inflow of gasolene to the carbureter.

Referring more particularly to the parts of the carburetor, 1 indicatesthe main casing, 2 the mixing chamber above the same, and 3 the gasolenefeed pipe. The casing 1 .is preferably made cylindrical and of a suit:

able depth to accommodatethe movement of a float as 4 which is looselymounted within I cannuan'run. I

Patented Mar. 3.11914.

the same. "he casing 1 is enlarged upon one side to form an entrancerecess as 5 within which the valve 6 is mounted. which is controlled bythe float in regulating the inflow of gasolene to the carbureter.

The valve 6 is formed upon the lower end of a stem 7, the lower end ofwhich stem is enlarged and provided with screw threads as at S. Theupper end of the stem extends outside of the casing as clearly shown inFigs. 1 and 1 and is provided with a milled head 9 by which it may beadjusted. The said valve stem 7 passes longitudinally through a weightedsleeve as 10 the upper portion of which is reduced in size andpreferably made rectangular or squarein cross section where it passesoutwardly through the wall of the carbureter casing. The binding nut 9screwed upon the upper end of the stem 7, engages the end of the sleeve10 after the valve 6 has been properly set, for holding it in adjustedposit-ion.

The squared portion 11 of the weighted sleeve is adapted to movevertically in a nut 12 which is secured into the aperture 13 in thecasing. By turning the valve stem 7 it may be adjusted with respect tothe weighted sleeve 10 so as to permit of a proper feed of the incominggasolene. The valve 6 engages a valve seat 1% formed in the lower floorof the recess 5 and the said valve thus controls an inlet aperture 15through which the gasolene is drawn. The feed pipe 3 is secured to acoupling as 16 so that the gasolene is first introduced through saidpipe into a smallichamber 17 formed below the recess 5. The gasolenethus passes through theinlet 15 under the control of the valve 6.

The valve 6 is automatically raised or lowered by means of a yoke shapedlever 18 which extends into the casing 1, the forked inner portionthereof projecting in a semicircular manner beneath the hollow float 4.A depending projection 19 upon the under side of said fork lever ispivoted at 20 in the casing of the carburetor so that it may rock backand forth in accordance with the action of the float 4. An outerprojection 21 of the forked lever is provided with a forked end 28 whichengages an annular rest upon the said lever 18 it will rock the lever soas to lift the valve 6 from its seat andpermit the inflow of gasolene.As the gasolene rises in height in the casing 1 and lifts the float thelever 18 will be permitted 1 to rock in the opposite direction and seatthe her. The casing 1 is provided with a cen valve 6 for preventing afurther inflow of gasolene until more is needed.

The gasolene. is directed from the float chamber to the inlet valves ofthe carbureter .by means-of a passage 25'which connects with the floatchamber atone end and extends below and laterally beneaththe casing 1 toa point where inlet nozzles 26 and 27 extend upwardly toward the mixingcham- -tral concentric passage-way as at 28, the walls, of said passageprojecting at their upper edges slightly above the walls of thecasing 1. The lower end of said casing is open to the air so that theair can be drawn upwardly through the passage 28 and enter theimixingchamber as may be required.

The nozzle 26 preferably projects upwardly along the central axis of theair inlet 28 and is provided with a needle valve as 29 which is set tosecure a proper initial flow of gasolene for use, when the engine towhich the carbureter is connected begins its operation or is runningslowly. The nozzle 27 is also provided with a needle valve as 30and. isarranged to one side of the valve 29 and is usually applied upon theinner surface of the wall of the passage 28;

The passage of the gasolene into the mixing chamber 2 is controlled bymeans of a hollow thimble or sleeve 31, the upper end of which is flaredoutwardly and made to fit a bevel seat 32 formed in the upper edge ofthe inner concentric wall of the casing 1. The lower portion of thehollow thimble or casing 31 is preferably made cylindrical and is spaceda suflicient distance from the walls of the passage 28 to permit of aninflow of air. The air is also admitted through the central bore of thesleeve 31 and around the nozzle 26. The passage through the-center ofthe sleeve 31 is preferably flared outwardly at its lower and upperends,- it being contracted somewhat opposite the discharge end of thenozzle 26 as clearly shown in Fig. 4. The suction of the engine indrawing in the air and gaseous mixture is capable of lifting the sleeve31 for permitting an inflow of a large quantity of air and also fordrawing gasoleue from the auxilary nozzle 27. W? he air is drawn up-,n-d 1y through sleeve 31 the construction of the saidv sleeve is suchthat as it rises the contracted portion of said sleeve 31 automaticallycauses the suction of a greater quantity of gas from the nozzle of valve29, thereby maintainin a perfect mixture until the second nozzle 0 valve30 is brought into operation, thus sup lyin all the air and gas mixturerequired fldr al speeds of the engine. The casing of the mixing chamber2 is arranged immediately above the casing 1, the two casings beingpreferably screwed together as at 33. The lower wall or floor of thecasing 2 is provided with a central opening, which is of a proper sizeto just receive the upper free'edge of the inner concentric wall orcasing 1. The upper part of the casing 2 is provided with flanges 34 bywhich the carbureter may be bolted or otherwise secured to a pipe orother portion of the engine through which the gaseous mixture isintroduced. The throttle valve 35 of ordinary construction is pivotallymounted in the upper portion of the mixing chamber 2 and is controlledby the lever 36 arranged outside the casing in any usual and well knownmanner.

It will be observed that the hollow sleeve 31 normally rests upon theannular seat 32, though it is free to rise and fall with respectthereto, in accordance with the suction of the engine in drawing in theair and gas mixture. The cylindrical body portion of the sleeve 31 isguided in its movement by inwardly projecting ribs 37 formed upon theinner surface of the passage way 28. These ribs are usually set at anangle and may be slightly curved as clearly shown in Fig. 5 and indotted lines in Fig. 3 so that the air entering the passage-way 28outside the sleeve 31 is given a twisting movement. The sleeve 31 islimited in its upward movement by projecting detents 39 which arefastened into the lower portion of said sleeve. They project asufficient distance beyond 'the.

sleeve to engage the bottom of the casing l in preventing the saidsleeve from being lifted too high. The casing 1 is provided with theusual glazed sight opening 38 so that the height of the fluid in thesaid casing can always .be' inspected.

In using the carbureter the gas producing liquid is fed into the samethrough pipe 3 and maintained at a-suitable height within the casing 1,by the action of the hollow float 4. When the engine is first startedor' 27. The sleeve 3]. will thus automatically control the feed of airand additional gasolene to the carbureter in accordance with the demandsmade by the engine.

What I claim is 1. A carbureter mechanism comprising a casing having acentral opening connecting the interior With the atmosphere, a valveseat being formed at the inner end of said opening a reciprocating valvehaving a flared inner end to engage said seat, an in let nozzle forgasolene extending within said opening and into said valve and a secondinlet nozzle extending into said opening outside the valve, the feed ofgasolene through said nozzles being controlled by the movement of saidvalve.

2. A carbureter mechanism comprising a casing having a central airpassage extending through the same and into the mixing chamber of thecarbureter, needle valves eX- tending into said passage for introducingcarbureted material, a reciprocating hollow sleeve mounted in saidpassage, and capable of closing the discharge from one of said needlevalves, the suction of the engine connected with the carburetoroperating to move the valve and effect the introduction of more gasolenethrough the needle valves and the said central passage.

3. In a carbureter, a mixing chamber, an air passage leading to saidmixing chamber, said air passage having a valve seat at its upper end, aconical tubular member resting upon said valve seat, a fuel nozzleextending up into said conical member, and an auxiliary fuel passageopening into the space around such conical member.

In Witness that I claim the foregoing I have hereunto subscribed my namethis 28th day of November, 1910.

N. C. STAMPS.

Witnesses:

EDMUND A. STRAUSE, EDITH STADLMAN.

